ORGANIC ELECTROLYTE COMPOUNDS FOR REDOX-FLOW BATTERIES

Patent No. WO 2014198914 A1

Inventors

Michel Armand (CIC energiGUNE), Elizabeth Castillo (CIC energiGUNE), Estibaliz Coya (CIC energiGUNE), and Javier Carretero (CIC energiGUNE).

Abstract

Aqueous organic redox flow batteries stand as a promising alternative to vanadium as, based on the use of readily available organic molecules as redox-active material, they offer great versatility in terms of energy density, working voltage, and stability.

Researchers at CIC energiGUNE have been developed low-cost and non-toxic redox electrolyte compounds with high water-solubility, fast kinetics, and involving reversible and multiple proton-coupled electron-transfer redox reactions to be used as anolyte or/and catholyte in a redox flow battery. Thanks to an innovative strategy the solubility of organic compounds, barely soluble in water, was boosted impacting the energy density and performance strongly.

Added value

  • Environmentally friendly and cost-effective electrolyte.
  • Minimize membrane crossover.
  • Bifunctional electrolyte, allowing for efficient symmetricredox flow batteries.
  • Highly water-soluble organic compounds.

Application of the technology

  • Redox Flow Battery Technology.

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